Wood-turning machine



July 1, 1924. 1,499,802

L. H. BURLIN .woon TURNING MACHINE Filed Oct. 2o. 1921 y2 sheets-sneer 1 July 1, 1924. A 1,45%),802l

L. H. BURLIN WOOD TURNING MACHINE Filed OCt- 20. 1921 2 Sheets-Sheet 2 Axls oF wom Axls oF woRK Patented July l, 19245.

LESLIE H. BURLIN, OF CHICAGO, ILLINOIS.

To all whom 'it may concern: v

Be it known that I, LESLIE I-I. BERLIN, a citizen of the United States, residing at Chi cago, in the county of Cook and State of Illinois, have invented new and useful Improvements in Wood-Turning Machines, of which the following isa full, clear,l and exact description of the abandoned application led January 8, 1920, Serial No. 350,123, for which this application is substituted.

Heretofore wood turning has been accomplished mostly by means of chisels held in vthe hands of the operator or by machines in which the chisels where clamped in suitable devices or in which rotaryfcutters that were employed were moved laterally into contact with the rotating work. When done by hand wood turning is a very slow and expensive job, and when done by machine it requires considerable time to adjust the machine to do the work and the machine has to be stopped on an average of every five hours in order to sharpen the chisels or cutters. In addition to these objections wood turning machines are very expensive and must be operated by expensive expert labor.`

The object of my invention is to provide a comparatively simple and cheaply constructed wood turning machine the cost of which is within the'means of any machine shop, which can be operated by inexperienced and cheap labor,- which can` be adjusted within fifteen minutesV to cut any turned design, in which the rotary cutting devices will last on an average of three times as long as the wood turning machines heretoforein use, and whichdoes its work more quickly, and smoothly than the machines heretoforein use. This I accomplish by the means hereinafter fully described, and as particularly pointed out in the claims.

In the drawings: p

Figurey 1 is a side elevation of my invention. Y

Figure 2 is a plan view of the same.

Figure 3 is a detail view showing a section taken on line 3-3, Figure 2.

Figure 4 is a transverse section taken on line 4, 4, Figure 1.

Figures 5, 6, and 7, are diagrammatical vrviews illustrating my invention.

In the drawings 5 represents al suitable table or bench; 6 and 7 represent two standards the bases of which are secured to the top of said bench near the rear longitudinal edge of the same. The upper end of standwoon-TURNING MACHINE.

Application led October 20, 1921, Serial No. 509,173.

ard 6 is provided with a bearing for a longil, tudinal spindle 8, and this spindle has a pulley on its left hand end, which is driven through the medium of a belt 9 by an electric motor 10. l

The right hand 11 mounted thereon which has a couple of `spurs (not shown) projecting therefrom, t at project into the end of thebar or'blank of wood and assist in retaining it in .axialJ The upper end I K end of said spindle extends through its bearings and has an arbor Mounted on the top' of the bench in line with theV bases of the standards are vtwo gooseenecks, 14, 14, the upperportions of which curve to the rearand the upper ends of which are connected by single rail 15.

Suspended from` this rail by means vof hangers 10, 16, is a platform 17, the upper ends of said hangers being looped around the rail and having concaved wheels '18, 18, that travel back and forth on the same.

The platform 17 is of such widththatl there is a clearance between the same and" the rear edge of the bench, and mounted on an inclined dais 21 on this platform is an electric motor 19. The left hand end of the armature shaft 22 extends beyond thecasing thereof and has a circular saw 20 secured thereto. As the axis of the armature shaft is Vparallel with the inclined surface of the dais the plane of the periphery ofthe saw isinclined to the left from its uppermost segment or.

top towards its lowermost segment, thus when the saw ismoved towards and*d cuts into the work it eats intoV and removes the left hand wall of its kerf as the 'platform is moved from right to left.' This saw is sev eral times the diameter of the worlvso that" only a small proportion of itsperiphery is engaged with the'worlr at any one instance, and the heating and the wear is vlessened by being distributed over a great number v'of teeth, only a small portion of which enter the work at the same time. It is this relative size of the saw, and its relative thinness with reference to its diameter, which lends a special importance to the inclination in two planes of the saw to the work, facilitating the travel of the saw and lessening its tendency to bury itself in the work so as to make difficult its movement longitudinally of the work.

When the saw is not revolving its perimeter is not in contact with the work. lt is moved toward and away from the axis of the work to increase or decrease the depth of its kerf by means of a lateral arm 23, one end of which is suitably secured to the platform, and the other end of which extends over the bench and has its extremity turned downwards to `form a linger 24 which is adapted toenter the groove 25 in the plate or pattern 26. This pattern 26 is preferably screwed or otherwise removably secured to the top of the bench next the front edge of the latter and, the groove is disposed in a longitudinal direction in the pattern and its course follows the lines or sinuous courses of the exterior of the turning it is desired to cut from one end of the work to the other.

The arm 23- is preferably provided withV a vertical handle 27 that arises from near its forward extremity. The operator grasps this handle and moves the platform and the saw carried thereby from right to left, and the linger in the groove moves the saw towards and away from the axis of the work Vas it travels lengthwise in the same.

If desired, instead of the operator depending upon the handle 27 to feed the saw to the work, a chain or cable 30 could be secured to the left hand edge of platform 17 and extend to and around a drum 3l mounted on a transverse shaft 32 journaled in bearings 33 at the left hand end of the bench, and a crank 34 or handwheel be secured to the front end of this shaft to turn it as fast or as slow as it was desired to have the vsaw move.

I prefer to rotate the saw and the work in the same direction so that the movement of the contacting surfaces of the perimeters of the saw and work will be opposed to one another. Y

By inclining the saw in the manner hereinbefore described and as illustrated in the drawings, the side of the kerf is cut away from right to left. lVhile I prefer to ineline the saw, yet it is possible to so mount the same at right angles to the axis of the work, and to so cut the teeth that the periphery described by the same, that is its` cutting edge, will be oblique to the axis of the work.

Figures 6 and 7 illustrate embodiments of the idea of means of the preceding paragraph. The essential idea embodied in each of these figures is that of having the cutting face of the saw disposed at an angle to the axis of the work. One way of accomplishing this end isby disposing the saw and its shaft in such a manner that the horizontal section shows the saw disposed at an angle to the Y face orl to the axis of the work. This is shown in Figure 6. Under this embodiment the shaft of the saw in addition to being inclined to the horizontal as shown in Figure 1 of the drawings, is also inclined to the iaeaeoa axis of the work in the horizontal plane. Another way of accomplishing the same end of having the cutting face at an angle to the face or the axis of the work is as shown in Figure 7, to have the cutting edge of the saw on a bevel with relation to the faces of the saw. In this construction the shaft of the saw would be inclined only in the ver tical plane and not in the horizontal plane.

It will, of course, be realized that instead of the saw being carried longitudinally parallel to the axis of the work, said work may be moved longitudinally and fed to the saw which latter would revolve in a ii-xed plane.

What l claim as new is: Y

l. A wood turning machine comprising a bed, work spindles disposed on said bed, a curved support disposed at each end of the bed and having their upper ends connected with a rail, a platform suspended from said rail, movably along said rail and oscillating transversely of said rail, said platform having mounted thereon a wood cutting saw whose diameter greatly exceeds that of the work and means for rotating said saw, the axis of the said saw being inclined to the horizontal and the cutting edge of the saw being inclined to the axis of the work, an arm projecting from said platform having a downwardly projecting lug, means disposed on the bed cooperating with said lug for guiding the cutter longitudinally and transversely.

2. A wood turning machine comprising a bed, work spindles, a circular wood cutting saw whose diameter greatly exceeds that of the work, means for suspending the saw to permit longitudinal and transverse movement thereof, the saw being so disposed that the plane of rotation of the saw is inclined to the vertical and its cutting edge is inclined to the axis of the work in a horizontal plane.

3. A wood turning machine comprising a bed, work spindles, a platform having a circular wood cutting saw whose diameter greatly exceeds that of the work and means for rotating same mounted thereon7 means for suspending the platform to permit longitudinal Aand transverse movement thereof, the saw being so disposed that the plane of rotation of the saw is inclined to the vertical andY its cutting edge is. inclinedV to the axis of the work in a horizontal plane, and means disposed on the bed and on the platform to guide the movement of said platform.

4L. A wood turning machine comprising a bed, work-spindles, a circular wood cutting saw, whose diameter greatly exceeds that of the work, means for suspending the saw to permit of longitudinal and transverse movement thereof, the saw being so disposed that the plane of rotation of the saw is inclined to the vertical and its cutting edge is inliti olined to the axis of the Work in a horizontal my hand and seal this seventh day of plane, means for guiding the longitudinal October 1921. and transverse movement of the saw in con formance with the desired shape of the 5 Work7 and manually operable means for Witnesses:

moving the saw longitudinally of the bed. Louis Gr. CALDWELL, In Witness whereof I have hereunto set VIOLET WARDELL.

f LESLIE H. BURLIN. 

